Portion of an operation controller for electronic computers



FIG. 1 is a top, front and right side perspective view of a portion ofan operation controller for electronic computers showing my new design,

FIG. 2 is a front elevational view thereof,

FIG. 3 is a rear elevational view thereof,

FIG. 4 is a left side elevational view thereof,

FIG. 5 is a right side elevational view thereof,

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines are shown for illustrative purposes only and form nopart of the claimed design.

The ornamental design for a portion of an operation controller forelectronic computers, as shown and described.